You can have a very intense relationship with fictional characters because they are in your own head.

Then you should have died! Died, rather than betray your friends, as we would have done for you!

Bidding the wizard farewell, he turned to his daughter, who held up her finger and said, “Daddy, look — one of the gnomes actually bit me!” “How wonderful! Gnome saliva is enormously beneficial!” said Mr. Lovegood, seizing Luna’s outstretched finger and examining the bleeding puncture marks. “Luna, my love, if you should feel any burgeoning talent today — perhaps an unexpected urge to sing opera or to declaim in Mermish — do not repress it! You may have been gifted by the Gernumblies!” Ron, passing them in the opposite direction, let out a loud snort.

Dumbledore paused, and although his voice remained light and calm, and he gave no obvious sign of anger, Harry felt a kind of chill emanating from him and noticed that the Dursleys drew very slightly closer together. “You did not do as I asked. You have never treated Harry as a son. He has known nothing but neglect and often cruelty at your hands. The best that can be said is that he has at least escaped the appalling damage you have inflicted upon the unfortunate boy sitting between you.

Next time there’s a ball, ask me before someone else does, and not as a last resort!

Your great puddin' of a son don' need fattin' anymore Dursley, don't worry

When I get married,' said Fred, tugging at the collar of his own robes. 'I won't be bothering with any of this nonsense. You can all wear what you like and I'll put a full body-bind curse on mum until it's over.